Re: switch 10G standalone TOR, core to DC
W dniu 2013-01-30 12:59, Ingo Flaschberger pisze:
Am 30.01.2013 11:30, schrieb Piotr:
2. Hp 5900 af 48xg large buffer options - configurable buffers gpl 30k$ small: Memory and processor 512 MB flash, 2 GB SDRAM; packet buffer size: 9 MB
http://h17007.www1.hp.com/us/en/products/switches/HP_5900_Switch_Series/inde... Tab models
small in 5900 series: High-performance 10 GbE switching — cut-through and nonblocking architecture delivers industry-leading low latency (~1 microsecond) and very demanding enterprise applications; the switch delivers a 1.28 Tbps switching capacity and 952.32 Mpps packet forwarding rate in addition to incorporating 9 MB of packet buffers or big in 5920: High-performance 10GbE switching — enables you to scale your server-edge 10GbE ToR deployments with 24 high-density 10GbE ports delivered in a 1RU design; delivers a 480 Gbps (357.12 Mpps) switching capacity in addition to incorporating 3.6 GB of packet buffers Ultra-deep packet buffering — provides up to a 3.6 GB packet buffer to reduce network congestion at the I/O that is associated with the heavy use of server virtualization, as well as bursty multimedia, storage applications, and other critical services http://h17007.www1.hp.com/us/en/products/switches/HP_5920_Switch_Series/inde...
Well, talking about HP´s A5920/A5900 series. Last time I was looking, their virtual routing instances haven´t supported IPv4 multicast, nor IPv6 multicast/unicast, nor any policy based routing. Michael
Hi Peter, http://www.aristanetworks.com/media/system/pdf/Datasheets/7050S_Datasheet.pd... Arista 7050S-64 48 x 10GE + 4 x 40 GE, price around 25k$ in gpl. Large buffers, supports MLAG, DCB, wire-speed L2/L3 (OSPF,BGP), but doesn't have any kind of TRILL implementation. Have it in production, but for now using for L2 only with MLAG. As option also can be considered: Brocade VDX6720, has own TRILL-like protocol to make STP-free topology, also can do L3, DCB but pay attention licensing is painful with Brocade. Best Regards,Sergey
Date: Thu, 7 Feb 2013 18:13:58 +0100 From: excelsio@gmx.com To: nanog@nanog.org Subject: Re: switch 10G standalone TOR, core to DC
Well, talking about HP´s A5920/A5900 series. Last time I was looking, their virtual routing instances haven´t supported IPv4 multicast, nor IPv6 multicast/unicast, nor any policy based routing.
Michael
W dniu 2013-02-07 22:54, Sergey Marunich pisze:
Hi Peter, http://www.aristanetworks.com/media/system/pdf/Datasheets/7050S_Datasheet.pd... Arista 7050S-64 48 x 10GE + 4 x 40 GE, price around 25k$ in gpl. Large buffers, supports MLAG, DCB, wire-speed L2/L3 (OSPF,BGP), but doesn't have any kind of TRILL implementation.
from documentation: shared 9 MB packet buffer pool that is allocated dynamically to ports that are congested 9MB is a standard size of port buffers.. regards, Piotr
On 12/02/2013 14:23, Piotr wrote:
shared 9 MB packet buffer pool that is allocated dynamically to ports that are congested
9MB is a standard size of port buffers..
That's pretty standard for a cut-thru ToR switch of this style. Cut-thru switches generally need a lot less packet buffer space than store-n-forward switches. Also, ToR boxes tend not to have complex qos requirements. Having said that, you need to be careful deploying small-buffer boxes. If you're not careful, you will end up with bad packet loss. Nick
Anyone have worked with the switching vendor Quanta for their 10ge switching as TOR? [1] Their spec looked interesting and they are quiet cheap. [1] http://www.quantaqct.com/en/01_product/02_detail.php?mid=30&sid=114&id=116&qs=63 -bn 0216331C On Tue, Feb 12, 2013 at 7:45 AM, Nick Hilliard <nick@foobar.org> wrote:
On 12/02/2013 14:23, Piotr wrote:
shared 9 MB packet buffer pool that is allocated dynamically to ports that are congested
9MB is a standard size of port buffers..
That's pretty standard for a cut-thru ToR switch of this style. Cut-thru switches generally need a lot less packet buffer space than store-n-forward switches. Also, ToR boxes tend not to have complex qos requirements.
Having said that, you need to be careful deploying small-buffer boxes. If you're not careful, you will end up with bad packet loss.
Nick
On Tue, Feb 19, 2013 at 8:21 PM, Bao Nguyen <ngqbao@gmail.com> wrote:
Anyone have worked with the switching vendor Quanta for their 10ge switching as TOR? [1] Their spec looked interesting and they are quiet cheap.
[1] http://www.quantaqct.com/en/01_product/02_detail.php?mid=30&sid=114&id=116&qs=63
-bn 0216331C
Based on the specs, the Quanta switches look like they use Broadcom merchant silicon and should have similar performance to other switches based on the same chipset: http://blog.sflow.com/2011/12/merchant-silicon.html While many vendors use merchant silicon, there is variability in firmware, exposed features, CLI etc.
I have fairly extensive experience with the Quanta LY2 10GE switches, and they work very well for some environments. Here are some basic impressions: - Broadcom Trident chipset - Similar performance to other Trident switches (ideally line rate, but small buffers) - Cisco-like configuration interface (similar, not the same) - Custom Linux kernel and OS - Basic look-and-feel, but so far the quality has not been a disappointment - Decent support for topologies with no Spanning-Tree - Good compatibility with SFP+ transceivers, direct connections, and optics from various sources. - Basic feature set (OSPF/RIP, but no BGP) - Somewhat limited troubleshooting and debug tools One very pleasant aspect of working with Quanta is that they are very responsive to feature requests, often working closely with customers. On the other hand, their release schedules are somewhat non-specific. I've been waiting for full MLAG support for a while (it's supposedly right around the corner). They are particularly convenient if you are putting them at the top of racks full of Quanta servers, since they have logistics and full-rack staging/shipping. I wish they had better MIB support, BGP, scriptability, and policy-based routing, but they don't. They are cheap enough, however, that you may be able to get two LY2 switches for the price of one of some of their competitors. -- Dan Sneddon On Tuesday, February 19, 2013 at 8:21 PM, Bao Nguyen wrote:
Anyone have worked with the switching vendor Quanta for their 10ge switching as TOR? [1] Their spec looked interesting and they are quiet cheap.
[1] http://www.quantaqct.com/en/01_product/02_detail.php?mid=30&sid=114&id=116&qs=63
-bn 0216331C
participants (7)
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Bao Nguyen -
Dan Sneddon -
excelsio＠gmx.com -
Nick Hilliard -
Peter Phaal -
Piotr -
Sergey Marunich